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Giant dielectric tunability in ferroelectric ceramics with ultralow loss by ion substitution design

Author

Listed:
  • Ruitao Li

    (Xi’an Jiaotong University)

  • Diming Xu

    (Xi’an Jiaotong University)

  • Chao Du

    (Xi’an Jiaotong University)

  • Qianqian Ma

    (Xi’an Jiaotong University)

  • Feng Zhang

    (Xi’an Jiaotong University)

  • Xu Liang

    (Xi’an Jiaotong University)

  • Dawei Wang

    (Xi’an Jiaotong University)

  • Zhongqi Shi

    (Xi’an Jiaotong University)

  • Wenfeng Liu

    (Xi’an Jiaotong University)

  • Di Zhou

    (Xi’an Jiaotong University)

Abstract

Due to their responsiveness to modulation by external direct current fields, dielectric tunable materials are extensively utilized in integrated components, such as ferroelectric phase shifters. Barium strontium titanate ceramics have been considered the most potential tunable materials for a long time. However, the significant dielectric loss and high voltage drive have limited their further applications. Recently, Bi6Ti5WO22 ceramic has regained attention for its high dielectric tunability with low loss. In this study, we judiciously introduce Nb5+ with a larger ionic radius, replacing Ti4+ and W6+. This successful substitution enables the modulation of the phase transition temperature of Bi6Ti5WO22 ceramics to room temperature, resulting in superior tunable properties. Specifically, the 0.7Bi6Ti5WO22−0.3Bi6Ti4Nb2O22 ceramics exhibit giant tunability (~75.6%) with ultralow loss (

Suggested Citation

  • Ruitao Li & Diming Xu & Chao Du & Qianqian Ma & Feng Zhang & Xu Liang & Dawei Wang & Zhongqi Shi & Wenfeng Liu & Di Zhou, 2024. "Giant dielectric tunability in ferroelectric ceramics with ultralow loss by ion substitution design," Nature Communications, Nature, vol. 15(1), pages 1-8, December.
    • Handle: RePEc:nat:natcom:v:15:y:2024:i:1:d:10.1038_s41467-024-48264-7
    DOI: 10.1038/s41467-024-48264-7
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    References listed on IDEAS

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    1. Zongquan Gu & Shishir Pandya & Atanu Samanta & Shi Liu & Geoffrey Xiao & Cedric J. G. Meyers & Anoop R. Damodaran & Haim Barak & Arvind Dasgupta & Sahar Saremi & Alessia Polemi & Liyan Wu & Adrian A. , 2018. "Resonant domain-wall-enhanced tunable microwave ferroelectrics," Nature, Nature, vol. 560(7720), pages 622-627, August.
    2. Che-Hui Lee & Nathan D. Orloff & Turan Birol & Ye Zhu & Veronica Goian & Eduard Rocas & Ryan Haislmaier & Eftihia Vlahos & Julia A. Mundy & Lena F. Kourkoutis & Yuefeng Nie & Michael D. Biegalski & Ji, 2013. "Exploiting dimensionality and defect mitigation to create tunable microwave dielectrics," Nature, Nature, vol. 502(7472), pages 532-536, October.
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